/*
 * The MIT License
 *
 * Copyright (c) 2013-2016 reark project contributors
 *
 * https://github.com/reark/reark/graphs/contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package io.reark.reark.utils;

import org.junit.Test;

public class ObjectLockHandlerTest {

    @Test(expected = NullPointerException.class)
    public void acquire_WithNull_Throws() throws InterruptedException {
        ObjectLockHandler<String> handler = new ObjectLockHandler<>();

        handler.acquire(null);
    }

    @Test(expected = IllegalStateException.class)
    public void release_BeforeAcquire_Throws() throws InterruptedException {
        ObjectLockHandler<String> handler = new ObjectLockHandler<>();

        handler.release("object");
    }

    @Test
    public void release_AfterAcquire_Succeeds() throws InterruptedException {
        ObjectLockHandler<String> handler = new ObjectLockHandler<>();

        handler.acquire("object");
        handler.release("object");
    }

    @Test(expected = IllegalStateException.class)
    public void releaseTwice_WithOnceAcquire_Throws() throws InterruptedException {
        ObjectLockHandler<String> handler = new ObjectLockHandler<>();

        handler.acquire("object");
        handler.release("object");
        handler.release("object");
    }

    @Test(expected = IllegalStateException.class)
    public void release_DifferentFromAcquire_Throws() throws InterruptedException {
        ObjectLockHandler<String> handler = new ObjectLockHandler<>();

        handler.acquire("object");
        handler.release("different");
    }

    @Test
    public void acquireAndRelease_TwoDifferentObjects_Succeeds() throws InterruptedException {
        ObjectLockHandler<String> handler = new ObjectLockHandler<>();

        handler.acquire("object");
        handler.acquire("different");
        handler.release("different");
        handler.release("object");
    }
}
